{"product_id":"woodward-8404-4005-proact-digital-plus-speed-controller","title":"Woodward 8404-4005 ProAct Digital Plus Speed Controller","description":"\u003ch2\u003eWoodward 8404-4005 ProAct Digital Plus Speed Controller\u003c\/h2\u003e\n\u003cp\u003eConfigured for precise engine speed governing and throttle position control in industrial power generation and mechanical drive systems, the \u003cstrong\u003eWoodward 8404-4005\u003c\/strong\u003e (\u003cstrong\u003e8404-4005\u003c\/strong\u003e ProAct Digital Plus Speed Controller) provides direct physical\/electrical execution.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eActuator Type\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eThrottle Bore\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eRated Torque\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e8404-4005\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntegrated Bi-Directional Actuator\u003c\/td\u003e\n\u003ctd\u003e36 mm\u003c\/td\u003e\n\u003ctd\u003e0.34 Nm\u003c\/td\u003e\n\u003ctd\u003e10-32 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e8404-4005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWoodward\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.1 kg (2.44 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 36 mm throttle bore body footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +105 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e2.5 A maximum continuous draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10-32 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActuator Motor Technology\u003c\/td\u003e\n\u003ctd\u003eLimited Angle Torque (LAT) motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Travel\u003c\/td\u003e\n\u003ctd\u003eRotary throttle actuation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Torque\u003c\/td\u003e\n\u003ctd\u003e0.34 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Type\u003c\/td\u003e\n\u003ctd\u003eFully programmable digital speed governing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eActuator Loop Feedback Response \u0026amp; Speed Control\u003c\/h3\u003e\n\u003cp\u003eThe integrated Limited Angle Torque (LAT) motor delivers fast actuator loop feedback response to damp engine speed deviations caused by immediate load steps. Because the bi-directional drive eliminates mechanical return spring hysteresis, the controller enforces exact throttle plate positioning through high-frequency digital loops. Furthermore, internal thermal heat sink dissipation profiles prevent thermal drift during continuous 2.5 A current cycles across the 10-32 VDC operating voltage band.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the digital architecture alter loop stability compared to legacy analog governor units?\u003c\/p\u003e\n\u003cp\u003eA: Digital control loops allow exact tuning of proportional, integral, and derivative parameters via software, eliminating analog potentiometer drift and improving transient speed recovery during full-load acceptance.\u003c\/p\u003e\n\u003cp\u003eQ: What power supply considerations apply to the 10-32 VDC operating range?\u003c\/p\u003e\n\u003cp\u003eA: The internal power stage accepts wide DC input variance, maintaining full rated torque (0.34 Nm) even during engine cranking conditions where battery voltage drops significantly.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 36 mm integrated throttle plate require external mechanical linkages?\u003c\/p\u003e\n\u003cp\u003eA: No, the throttle plate mounts directly on the rotary shaft driven by the bi-directional LAT motor, eliminating mechanical backlash and reducing total installation complexity.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the unit directly to the engine intake manifold using high-temperature gasket materials to prevent vacuum leaks. Ensure the 36 mm throttle bore aligns perfectly with the intake runner to prevent air turbulence and mechanical jamming. Ground the controller enclosure to the engine block via a short, heavy-gauge braided ground strap to establish a solid equipotential frame.\u003c\/p\u003e\n\u003cp\u003eRoute all power and signal wiring through dedicated twisted-shielded pairs, maintaining clear separation from high-voltage ignition leads and generator output cables. Terminate signal shields at the single point earth ground near the controller end to prevent ground loops. During initial power-up, verify that the 10-32 VDC supply lines provide continuous current capability up to 2.5 A without voltage dips, then set digital PID governing parameters according to engine manufacturer specifications.\u003c\/p\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":43907375235171,"sku":"8404-4005","price":310.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/54_b290441e-55a4-4974-9aa9-1f50dc40685b.jpg?v=1766471127","url":"https:\/\/www.autocontrolglobal.com\/products\/woodward-8404-4005-proact-digital-plus-speed-controller","provider":"AutoControl Global","version":"1.0","type":"link"}